11331257687 has 2 divisors, whose sum is σ = 11331257688. Its totient is φ = 11331257686.

The previous prime is 11331257681. The next prime is 11331257723. The reversal of 11331257687 is 78675213311.

11331257687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11331257687 - 2¹⁶ = 11331192151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331257681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665628843 + 5665628844.

It is an arithmetic number, because the mean of its divisors is an integer number (5665628844).

Almost surely, 2^11331257687 is an apocalyptic number.

11331257687 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331257687 is an equidigital number, since it uses as much as digits as its factorization.

11331257687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The spelling of 11331257687 in words is "eleven billion, three hundred thirty-one million, two hundred fifty-seven thousand, six hundred eighty-seven".